Burner with vaporizer for liquid fuel.



No. 64!,369. Patented Jan; I6, moo. 0. BRUNLER.

BURNER WITH VAPOBIZER FOB LIQUID FUEL.

(Application filed Nov. 16, 1898.)

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' NITED STATES PATENT OFFICE.

OSCAR BRI'TNLER, OF EILENBURG, GERMANY.

BURNER WITH VAPORIZER FOR LIQUID FUEL.

SPECIFICATION forming part of Letters Patent No. 641,369, dated January16, 1900. Application filed November 15, 1898. Serial No. 696,574. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, OSCAR BRi'INLER, a subject of the Emperor ofGermany, residing at Eilenburg,in the Province of Saxony, German Empire,have invented new and useful Improvements in Burners with Vaporizers forLiquid Fuel, of which the following is a speci fication.

The present invention has reference to improvements in burners forliquid fuel; and it relates more especially to that class of burners inwhich the liquid fuel is sprayed upon a heated surface, where itisvaporized and ignited. A great drawback connected with the employment ofthis kind of burner is that the vaporizing surface or surfaces areheated to a veryhigh degree, in consequence of which they very soonsuffer and become useless by being melted or cracked. The cracking isbrought about by the comparatively cool spray of the fuel striking theheated surface, especially when the latter consists of apyrous mineralbodies.

The object of this invention is to do away with this disadvantage and toconstruct a burner in which the highest temperature is attained at apoint far enough above the vaporizer as to insure the keeping of thelatter.

According to my invention I arrange the air-introduction pipe in such away that the air enters partly below the vaporizer and partly above thevaporizing-surface and regulates the amount of air-passing in frombelow, so that it just suffices for causing an imperfect combustion uponthe air and the spray of fuel striking the vaporizer. The slow-burninggases are then conducted through apertures in the vaporizer into theburner-head proper, into which an amount of air is introduced necessaryto now bring about the perfect combustion. The highest temperature,therefore, is attained at the mouth of the burner above thevaporizing-chamber,and the latter will in no way be injured. I shall nowdescribe my invention with reference to the accompanying drawing, whichshows a burner embodying the spirit of my invention.

The drawing represents a vertical sectional view of a burner inconnection with a crucible or smelting-pot, part of the burner beingrepresented in section and part in elevation.

The introduction-pipe a for the liquid fuel is surrounded by the conicalmantle m, having elongated slots h. Upon this conical mantle andcommunicating with it the hollow vaporizer b is arranged, theoutwardly-dished cover-plate n of which is provided with a numberofapertures or slots n. The mantle m and the vaporizer are surroundedbya mansurface of the hollow vaporizer, which, as cus-' tomary, has beengiven an initial heating in any desirable manner, where it is vaporizedand incompletely ignited. The slow-burning gases now pass upward throughthe slots n in the cover-plate n and receive the additional amount ofair necessary for perfect combustion,this air having taken its courseout of pipe c,'ar0und the vaporizer, and through the annular passage 2'.The flame is projected out of the mouth f of the burner, and its highesttemperature is attained at or near this mouth at some distance above thevaporizer.

What I do claim, and desire to secure by Letters Patent, is

In a burner for liquid fuel the combination of a fuel-feed pipe, acone-shaped mantle having elongated slots and surrounding said fuelfeedpipe, a hollow vaporizer, communicating with the said cone-shaped mantleand having an outwardly-dished cover-plate, provided with slots, anouter mantle surrounding the said cone-shaped mantle and the vaporizerat some distance and an air-supply pipe, opening into the space formedbetween the said outer mantle, the cone-shaped mantle and the vaporizer,the parts being constructed and arranged substantially as set forth.

In witness whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OSCAR BRUNLER.

Witnesses RUDOLPH FRICKE, WILLI GINcKE.

